A Shaped-Foil Recoil Spectrometer for Neutron Time-of-Flight Measurements
نویسندگان
چکیده
A new design is presented for a time-ofight neutron spectrometer that uses a shaped scattering foil to generate deuteron recoils. It is shown that the number of recoils can be substantially increased by utilizing a three-dimensional, deuterated scattering foil in the shape of an ellipsoid, which maintains the time-ofight dispersion present originally in the neutrons. The time-integrated neutron spectrum can be extracted from deuteron recoils by time-ofight spectrometry using a detector, such as a silicon PiN diode, operated in current-mode. On inertial con nement fusion targets with D-T yield of 10, approximately 1700 deuteron recoils can be detected at 160 cm from the target.
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